Sharpener for shears.



UNITED STATES Patented December 6, 1904.

PATENT OEEICE.

JAMES H. VAN TASSEL AND JAMES M. THORNTON, OF ELMIRA, NFV YORK.

SHARPENER FOR SHEARS.

SPECIFICATION forming part of Letters Patent No. 776,967, dated December6, 1904.

Application led May 13, 1.904. Serial No. 208,580. (No model.)

To all whom, it may concern.'

Be it known that we, JAMEs H. VAN TAssEL and J AMES MTHOENTON, citizensof the United States, residing at Elmira, in the county of Ohemung andState of New York, have invented new and useful Improvements inSharpeners for Shears, of which the following' is a specification.

Our invention relates to Sharpeners for shears or scissors; and one ofthe objects of the same is to provide a device of comparatively simpleand inexpensive construction which may be successfully operated by anunskilled or inexperienced person.

Another object is to provide a shear-sharpener for use by barbers,dressmakers, and for household use which will not readily get out oforder and which can be quickly and easily adjusted to grind any desiredbevel on the blades of a pair of scissors or shears by an unskilledoperator.

These objects are attained by means of the device illustrated in theaccompanying' drawings, in which- Figure 1 is a perspective view of ashear- Sharpener made in accordance with our invention. Fig. 2 is across-sectional view of the same on the line 1 1, Fig. 1. Fig'. 3 is adetail sectional view of the blade-clamp. Fig. 4 isa detail section ofthe bevel-adjustment means. Fig. 5 is a detail view illustrating themeans which we use for holding' the grinding-stone or hone in place.Fig. 6 is a detail view of one of the adjusting-screws. Fig'. 7 is asimilar View of another adjusting-screw.

Like numerals of reference designate like parts wherever they occur inthe different views of the drawings.

The numeral 1 designates a base, upon which is mounted a metal plate 2,having its side edges bent upward and inward to form a slideway 3 forthe blade-clamp 4. A grindingstone or hone 5 is secured to the base bymeans of the metal stop 6, provided with ears 7, bearing against one endof the grindstone or hone, said stop being' secured in place by screws8, the opposite end of the stone having a holding' device comprising' aplate 9, bearing at one end against the stone, while the other end isprovided with a toe 10, inserted in a small opening' in the plate 2. Abinding-screw 11 secures the holding' device and the stone in place, asshown in Fig'. 5.

The sliding clamp 1 comprises a plate 12, having a horizontal uppersurface and downwardly-extending side portions 13, the terminal edges ofwhich are bent outward to form feet 14k,- which slide in the way 3. Aslot 15 extends diagonally across the horizontal portion of the clamp11. A plate 16, secured by hinges 17 near one edge of the slot 15, isadjustable to give the required bevel tothe shearblade by means of aset-screw 18 passing through a bracket 19, secured to the plate 2, oneend of said set-screw being seated in a cross-bar 20, extending' betweenthe ears 21, projected backward from the plate 16. The set-screw 18 isfitted to turn freely within the cross-bar 20, and the threads of thescrew work within the threaded opening' in the bracket 19. (See Fig. l.)

The blade 22 of the shears is held in place by a clamp comprising a rod23, having asuitably-shaped lower end 24 to bear against the side andtop of the blade, said rod being sccured to or formed with a rod 25,encircled by a spring 26. A bracket 27 secured to thebase has an ear 28at its upper end, and a cap-nut 29 is threaded to lit an opening in theear 28, the upper end of the rod 25 extending into the nut 29, and thuspermittingan adjustment of the tension of the spring' 26in securing' theblade 22 in place.

To hold the clamp-rod 23 against the side of the blade 22, a plate 30passes through a slot 31 in the plate 16 and is provided with a slot 32,tl'irough which the rod 23 passes. A tension-sjn'ing 33 surrounds thestub end of the plate 30, and the ,opposite end of spring eneircles theshank Sel of a set-screw 35, threaded to iit a threaded opening in abracket 36, secured to the base l. Suitable stops 37 are secured nearthe ends of the base to prevent the sliding clamp from moving off thebase.

The operation of our invention is `as follows: The blade of the shearsto be sharpened is clamped in place and the desired adjustment given tothe bevel-clamp. The sliding clamp I is then reciprocated by hand, theedge or' the blade being held down to the grindstone.

Having thus fully described our invention, what We claim, and desire tosecure by Letters Patent, is-

1. In a sharpener for shears, a base having a lione or grinding-stonesecured thereto, a clamp extending' across the stone and base andsliding upon the base and carrying means for holding the blade at anyrequired inclination.

2. A scissors-Sharpener comprising a base having a hone orgrinding-stone secured thereto, a slotted sliding clamp extending acrossthe base and stone and sliding upon said base, a blade-holder, and meansfor giving the required inclination to the blade.

8. A shear-Sharpener comprising a base having inturned ianges at itsedges, a grinding-stone secured to said base, a slide engaging thelanges on the base and extending across the stone, aspring-blade holdercarried by the slide, and a plate hinged to the slide and provided withmeans for holding it at any required inclination, substantially asdescribed.

4. In a shear-sharpener,a base-plate, a grinding-stone secured to saidbase-plate by means of a plate and in combination With a slotted slidingclamp extending across the base and sliding' thereon, and means carriedby said clamp for securing the shear-blade and holding said blade at anyrequired angle.

5. In a shear-Sharpener, a base, a grindingstone secured thereto, areciprocating clamp carrying' a blade-holder, a hinged plate, and meansfor holding the plate at any required inclination, substantially asdescribed.

JAMES H. VAN TASSEL. JAMES M. THORNTON. Vitnesses:

D. O. CONNELL, H. R. UNDERWOOD.

